一种基于交替分层流体的混合设计,用于覆盖弹性气的覆盖
Zijian Shi1, Gaokun Yu1, Yiming Gu2
1College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China.
The Journal of the Acoustical Society of America
|February 3, 2025
概括
这项研究展示了一种新的混合声学遮方法,用于使用层状液体的弹性气. 该技术实现了显著的可见性降低,为先进的水下声学隐形应用提供了潜力.
科学领域:
- 声学 声学 在声学方面
- 材料科学 材料科学 材料科学
- 波浪物理 波浪物理
背景情况:
- 声学隐蔽的目的是使物体在声学上看不见.
- 散射取消是实现隐蔽的一个关键技术.
- 弹性气由于其材料特性,对声学遮构成挑战.
研究的目的:
- 开发和实验验证弹性气的混合声学遮设计.
- 将声学遮原理与使用分层流体的散射取消相结合.
- 为了研究覆盖性能跨越频率和事件角度的范围.
主要方法:
- 一种混合设计,使用交替的HGM (合成泡) 和Pb () 层浸入背景流体中.
- 数字模拟用于模拟隐蔽性能.
- 实验测量,以验证一个气的遮效果.
主要成果:
- 在18kHz和23kHz之间的气筒 (半径50mm) 中,实现了低于-5dB的测量可见度降低.
- 与薄弹性外方法相比,在较短的波长下已经证明了隐蔽.
- 确认的遮蔽性能是独立于入射角度的.
结论:
- 拟议的分层流体方法有效地覆盖了弹性气.
- 这种方法比现有技术具有优势,包括更广泛的适用性和角度独立性.
- 呈现了水下声学隐形技术的一个有前途的进步.
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